1 files changed, 9 insertions, 3 deletions
diff --git a/source/zx81.c b/source/zx81.c
index 533c382..41ff686 100644
--- a/source/zx81.c
+++ b/source/zx81.c
@@ -28,6 +28,8 @@
 #include <ctype.h>
 #include <nds.h>
 
+#include "ds81_global.h"
+
 #include "zx81.h"
 #include "gui.h"
 
@@ -446,10 +448,14 @@ static void ZX81HouseKeeping(Z80 *z80)
     if (lastk1 && (lastk1!=prev_lk1 || lastk2!=prev_lk2))
     {
     	mem[CDFLAG]|=1;
-
-	mem[LASTK1]=lastk1^0xff;
-	mem[LASTK2]=lastk2^0xff;
     }
+    else
+    {
+    	mem[CDFLAG]&=~1;
+    }
+
+    mem[LASTK1]=lastk1^0xff;
+    mem[LASTK2]=lastk2^0xff;
 
     prev_lk1=lastk1;
     prev_lk2=lastk2;